package com.ken.controller.user;

import com.ken.constant.StatusConstant;
import com.ken.entity.Dish;
import com.ken.result.Result;
import com.ken.service.DishService;
import com.ken.vo.DishVO;
import io.swagger.annotations.Api;
import io.swagger.annotations.ApiOperation;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import java.util.List;
import java.util.concurrent.TimeUnit;

@RestController("userDishController")
@RequestMapping("/user/dish")
@Slf4j
@Api(tags = "C端-菜品浏览接口")
public class DishController {
    @Autowired
    private DishService dishService;
    @Autowired
    private RedisTemplate redisTemplate;

    /**
     * 根据分类id查询菜品
     *
     * @param categoryId
     * @return
     */
    @GetMapping("/list")
    @ApiOperation("根据分类id查询菜品")
    public Result<List<DishVO>> list(Long categoryId) {
        //构造redis缓存key，规则为：dish_分类id
        String key = "dish_" + categoryId;

        //查询redis中是否有缓存数据
        List<DishVO> dishVOS = (List<DishVO>) redisTemplate.opsForValue().get(key);

        //存在数据直接返回给前端
        if (dishVOS!=null&&!dishVOS.isEmpty()){
            return Result.success(dishVOS);
        }
        Dish dish = new Dish();
        dish.setCategoryId(categoryId);
        dish.setStatus(StatusConstant.ENABLE);
        //查询起售中的菜品
        List<DishVO> list = dishService.listWithFlavor(dish);
        //存入Redis
        redisTemplate.opsForValue().set(key,list,10, TimeUnit.MINUTES);
        return Result.success(list);
    }

}
